Renewable energy source-oriented multi-energy microgrid shared energy storage control method and system

Abstract

The invention discloses a renewable energy source-oriented multi-energy microgrid shared energy storage control method and system, and belongs to the field of new energy consumption. Comprising the following steps: minimizing the total energy cost of all multi-energy microgrids and hybrid energy storage systems participating in shared energy storage as a target function; the energy flow between the micro-grid and the hybrid energy storage system is used as a decision variable; the method comprises the following steps: by taking electric quantity and natural gas quantity purchased from the outside of a micro-grid and energy flow in a single micro-grid as decision variables, and taking energy storage loss cost of a hybrid energy storage system, charging and discharging speed of the hybrid energy storage system and thermoelectric conversion of the hybrid energy storage system as decision variables, constructing constraint conditions for each decision variable; a hybrid energy storage system shared energy storage optimization control model is constructed; and solving the shared energy storage optimization control model of the hybrid energy storage system by adopting distributed optimization to obtain a control scheme that a plurality of micro-grids share a single hybrid energy storage system.

Description

technical field [0001] The invention belongs to the field of renewable energy consumption in power systems, and more specifically relates to a distributed renewable energy-oriented multi-energy micro-grid shared energy storage control method and system. Background technique [0002] Due to the increasing tension of traditional fossil energy, renewable energy has begun to be widely concerned and developed. In addition to large-scale renewable energy access to the power grid, various micro-grids with renewable energy power generation have also begun to develop rapidly. Renewable energy has the characteristics of intermittent and randomness, which poses a challenge to the dispatching work of the power grid; the grid connection of renewable energy has a great impact on the voltage and frequency of the large power grid, seriously affecting the power quality of the large power grid; Perfect, the utilization rate of renewable energy cannot be improved, and the abandonment rate is h...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a renewable energy-oriented multi-energy micro-grid shared energy storage control method and system, aiming to solve the problem of energy storage and energy storage in a multi-energy micro-grid with renewable energy Shared issues, improve the new energy consumption of renewable energy producers and consumers to reduce dependence on external energy sources such as power grids and natural gas

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